7 papers
The youngest massive star clusters in the Magellanic Clouds
M. Heydari-Malayeri, V. Charmandaris, L. Deharveng +3
High resolution observations with HST have recently allowed us to resolve and study several very tight clusters of newly born massive stars in the Magellanic Clouds. Situated in an…
The consequences of ram pressure stripping on the Virgo cluster spiral galaxy NGC 4522
B. Vollmer, M. Marcelin, P. Amram +3
New H-alpha Fabry-Perot interferometer observations of the Virgo cluster spiral galaxy NGC 4522 are presented. A velocity field up to a radius of 60'' was obtained. The observed ro…
Very young massive stars in the Small Magellanic Cloud, revealed by HST
M. Heydari-Malayeri, M. R. Rosa, H. Zinnecker +2
High spatial resolution imaging with the Hubble Space Telescope allowed us to resolve the compact HII, region N81 lying in the Small Magellanic Cloud (SMC). We show the presence of…
Necessity for High Accuracy Rotation Curves in Spiral Galaxies
Sebastien Blais-Ouellette, Claude Carignan, Philippe Amram
In the last 20 years, rotation curves derived from H I kinematics obtained on radio synthesis instruments were used to probe the dark matter distribution in spiral and dwarf irregu…
The Marseille Schmidt survey for active star-forming galaxies. I. Data on 92 emission line objects in two fields
C. Surace, G. Comte
We present data from a moderately deep spectroscopic Schmidt survey (Blim=17.5) of ``active galaxies'' selected by the presence of emission lines in their spectra and/or their UV e…
Starbursts in Barred Spiral Galaxies. II. Molecular and Optical Study of Three Wolf-Rayet Galaxies
T. Contini, H. Wozniak, S. Considere +1
We have searched for dense molecular gas in three barred spiral galaxies with young starbursts, NGC 3049, 5430 and 6764, which are known Wolf-Rayet galaxies. We detected HCN in the…